as imaged by the powerful new Wide Field Camera 3 on the Hubble Space Telescope (HST). The brightly glowing red regions in the spiral arms of the Southern Pinwheel Galaxy are dense bubbles of hydrogen gas in which fledgling stars are developing.
This article describes some of the details:
"Gradually, the young stars' fierce winds (streams of charged particles) blow away the gas, revealing bright blue star clusters. These stars are about 1 million to 10 million years old. The older populations of stars are not as blue."
Link to
more information and related images at the Space Telescope Science Institute.
as imaged by the powerful new Wide Field Camera 3 on the Hubble Space Telescope (HST). The brightly glowing red regions in the spiral arms of the Southern Pinwheel Galaxy are dense bubbles of hydrogen gas in which fledgling stars are developing. This article describes some of the details:
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